rockburst
Sudden rock failure
A rockburst is a sudden, violent failure of rock in underground mines or tunnels, where highly stressed rock explosively fractures and ejects into the excavation.
Rockbursts pose serious dangers to miners and can damage equipment and structures.
They occur most often in deep mines where pressure from overlying rock is intense: Three workers were injured in the rockburst.
Involuntary rhythmic shaking
- shockwavePropagating pressure disturbance
- seismicRelating to ground tremors
- vibrationRapid oscillating movement
- magnitudeSize or scale
epicenter · aftershock · seismograph · seismology · waveform · monitoring · sensor · geophone
Pressure, mental or vocal
- strainExcessive stretching force
- fractureSplit in hard material
- ruptureViolent tearing apart
- brittleLiable to shatter
elastic · compression · tension · shear · confinement · deformation · failure · crack
Underground ore excavation
- pillarUpright architectural support
- driftGradual movement, no direction
- excavationAct of unearthing
- tunnelEnclosed underground route
shaft · gallery · face · longwall · heading · abutment · ground control · bolting
Load beyond capacity
Death from accident
- injuryPhysical or psychological harm
- collapseSudden structural failure
- ejectionForced removal from somewhere
- damageHarm or impairment
risk assessment · safety · prevention · preconditioning · early warning · evacuation · incident · catastrophic
tremor
Involuntary rhythmic shaking
- shockwavePropagating pressure disturbance
- seismicRelating to ground tremors
- vibrationRapid oscillating movement
magnitude · epicenter · aftershock · seismograph · seismology · waveform · monitoring · sensor · geophone · P-wave
stress
Pressure, mental or vocal
brittle · elastic · compression · tension · shear · confinement · deformation · failure · crack · propagation
stope
Underground ore excavation
- pillarUpright architectural support
- driftGradual movement, no direction
- excavationAct of unearthing
tunnel · shaft · gallery · face · longwall · heading · abutment · ground control · bolting · support
overburden
Load beyond capacity
fatality
Death from accident
- injuryPhysical or psychological harm
- collapseSudden structural failure
- ejectionForced removal from somewhere
damage · risk assessment · safety · prevention · preconditioning · early warning · evacuation · incident · catastrophic · violent
- Mining Hazardscave-in, collapse, explosion, methane, gas explosion